Automatic double wall carton



H. v. amma fi p AUTOMATIC DOUBLE WALL CARTON Filed Jan. 24-. 1955ZNVENTOR #05557 M BOLD/N6 Feb. 12, 1957 H. v. BOLDING AUTOMATIC DOUBLEWALL CARTON 2 Sheets-Sheet 2 Filed Jan; 24, 1955 n u I u n u n n n n[I'll llllnllll I z I Fl?IIIIIwlfltrlfrlllflfllllllllllrllllllllllllll!IIIIIIIIIIIIII/illllhffllfi ATTORNEY United StatesPatent C 2,781,160 AUTOMATIC DOUBLE WALL CARTON. f

Hubert V. Bolding, Jefiersouville, Ind., assignor to The Bradley &Gilbert Company, Louisville, Ky., a corporation of KentuckyApplicationlanuary 24, 1955, Serial No. 483,680

' 3 Claims. (11. 229-41) This invention relates to a collapsible,single-blank, double wall carton which may be completely manufac-- turedby automatic machinery, and then shipped to a user in collapsedcondition. The collapsed carton may then be placed in an automaticloading machine and erected by merely pushing the, outer flattenedcorners of the carton. No other operations are required by the user toplace the carton in condition for use.

When the carton is in collapsed condition, the bottom members are inface-to-face engagement with each other. Upon erection, the bottommembers are automatically moved to their bottom forming positions andduring this movement the inner walls will be moved by the bottom membersfrom face-to-face engagement with the outer walls into spaced relationthereto.

Preferably one of the bottom members is dimensioned to provide an uppersmooth cover ply for the bottom, its configuration being the same as thearea defined by the inner walls, when erected. In a carton of thissmooth, bottom type, it is preferred that the bottom members besandwiched between the inner and outer walls when the carton is incollapsed condition. Upon erection the bottom members will beautomatically drawn down to their bottom forming positions and duringthis movement the inner walls will be drawn downwardly by the bottommembers from face-to-face engagement with the outer walls into spacedrelation therewith.

To provide rigidity to the erected carton, a bracing structuralrelationship is provided at the adjacent edges of the inner walls.Further, the smooth upper surface bottom member is equipped with lockingtab means which automatically coact with suitable slots in an inner wallupon erection to maintain the carton in erected condition.

Attempts to meet the needs of the industry in this field are exemplifiedby the patent to Arneson, No. 2,- 349,241, and the patent to Freel etal., No. 2,581,400. This invention, as will be further explainedhereinafter, presents a new concept in box design which enables theproduction of a collapsible carton of a certain structural type whichcan be completely assembled by the'carton manufacturer, shipped incollapsed condition, and erected by machinery exerting minimum forces onopposite collapsed corners of the carton. Shipping costs are reduced,erection costs are minimized, and shut-down losses of the carton loadingmachine due to erection failures are drastically reduced.

=Various other objects and meritorious features of the invention will beapparent from the following description Fig. 3 is a perspective viewlooking at the upper portio of the carton in collapsed condition;

Fig. 4 is a'sectional side view taken on line H 0! Fig. 2' Fig. 5 is asectional top view taken on line' 55 of Fig. 2; V v

Fig. 6 is a perspective view looking at the bottom portion of the cartonin partially erected condition;

Fig. 7 is a perspective view looking at the botto portion of the cartonin erected condition; 3'

Fig. 8 is a plan view of the end'portion of asingle integral blank onreduced scale designed to provide a covered box; and

Fig. 9 is a sectional side view of the end portion. of

the blank shown in Fig. 8, this view showing this portion of the blankin erected condition.

Referring now to Fig. 1', it will be seen that the single blank is cutand scored to form four outer walls 15, 16 17 and 18, an end attachingmember 19 being provided on wall 18 to enable fixed connection of wall18 to wall 15. Cross hatching on member 19 as well as elsewhere on theblank is intended to indicate glue areas.

Top frame panels 20, 21, 22 and 23 are integrally hinged by theirrespective score lines 24, 25, 26 and 27.

to the top edges of their respective outer walls 15 to 1 8.

Bottom anchor panels 36, 37, 38 and 39 are integrally hinged by theirrespective score lines 40, 41, 42 and 43 to their respective inner walls28 to 31.

At the bottom edges of'the outer walls 15 to 18 are integrally hingedbottom members 44, 45, 46 and 47 by their respective score lines 48, 49,50 and 51. Glue areas 52, 53, 54 and 55 fixedly secure the bottom anchorpanels 36 to 39 to their respective bottom members 44 to 47. I

Bottom folding tabs 56 and 57 are integrally hinged to the bottommembers 44 and 46 by diagonal score lines 58 and 59, respectively. Crosshatching on the bottom folding tabs 56 and 57 indicates glue areas whichfixedlysecure the tab 56 to the adjacent bottom member 45 and the tab 57to the adjacent bottom member 47.

The edges of top frame panels 21 and 23 are diagonally cut to facilitateassembly and the edges of top frame panels 20 and 22 are convexly cut tocover the edges of: top frame panels 21 and 23 and present a tailoredappearance as shown in Fig. 2. The corner edges of the inner walls 28 to31 adjacent the top frame panels 21 to 23 are also diagonally cut tofacilitate assembly.-

It will be noted that the adjacent edges of the inner walls 28 to 31 areslightly spaced from each other and;

that the bottom anchor panels 36 to 39 are shorter than their respectivescore lines 48 to Sladjacent to which they are glued; this facilitatesassembly also.

The inner walls 28 and 30 have score lines 60-61 and 62-63,respectively, which are preferably cut-score lines to provide minimumresistance to swinging movement of the edge spacer panels 6465 and66.67.

The inner walls 29 and 31 have cam edges (is-69 and 70--71,respectively, which engage their respective edge spacer panels 64-65 and6667 to swing-them: outwardly as seen in Fig. 5 when the carton iserected.

The bottom members 44 and 46 are triangular in configuration and thebottom members 45 and 47 have diag-.

onally cut edges extending from their respective score lines 49 and 51which form trapezoidal portions from which facilitate erection of thecarton.

fl a it V 3 Locking tabs 75 extend firom the rectangular portion '12. oibottom member: 45 and upon erection of the carton, these tabs 75 movedownwardly past the face of inner wall 31 anclinto the slotss76 formedby the completely severedportions 1hr score line 43, as shown Referringnow to- Figs. 2 and 3,-it-will"be seen that the collapsed carton of Fig.3 may be erected front-a substantially collapsed'parallelogramconfiguration to the rectangularconfigurafion of Fig. 2* by'merely-applying pressure inthe direction of' arrows SO-and 3 on a firstpair'of diagonally opposite corners 78 and 7-9. The 'rected-cartomwillbe "rigidly locked in position by the "engagement oflookingtabsi76"in"s1ots 76; "Goliapsing of the,. carton may be readilyaccomplished by applying pressiire 'onthe other or second Pa r ofdiagonally opposite corners- 8 2 and 83C: t

When erecting pressure applied to the first pair of 6oiners""'1 and 79,bot-tom fjol'dingtab 57, which is'fixedly "connected tofb ott om member4 7 andintegrally hinged to bottom member -46 bya score line 59, causesdownward hinged movement of the bottom members 46' and 47' from theiryertical collapsed martian within the collapsed outer walls 15 to 18 ofFig. 3 to? a horizontal condition a t 'th e bottom oftheerected'outerwalls as seen in Fig.2.

Similarly, the bottom folding tab 56 causes downward hinged movement ofthe bottom members 44 and 45.

. The score" line 59, to which bottorn' iolding tab 57 is integrallyhinged, extends diagonally'upwardly from the bottomof corner '79 andtoward corner 78 when the carton is collapsed. ,Similarly, the. scoreline 58, to which bottom folding tab 56 is integrally hinged; extendsdiagonally upwardlyfrom the bottom ofcorner 78 toward cor-. ier 79 whenthe carton is collaps ed. This arrangement will be apparent from Fig, 6wherein the carton is shown partially erected condition and the soorelines 58 and 59 are rnoving toward their horizontal position as shown inV Fig. 7F. r V. Fhebottom folding tab 57 in effect forms an L-shapedbottom forming unit'of bottom members 46 and: 47 which A cover 90 withlocking extensions91, which mate with ,collapsible and double wallfeatures are retained with the o e ed 119 des n nste d of the i le thikn ssh e slots (not. shown} at the upper: edge of wall-16, is in:tegrally hinged to the top edge of the outer-wall 96 on hinge line 92.To the lower edge of outer wall96 is integrally hinged a bottom member93, a return bottom flap 94, an inner wall 95, a top frame'panel 97 anda glue panel 98 The cross hatched areas indicate glue areas- Bets-I nanew t Fi 9 t will be seath tom member .47 .ot Eighl thc covered box hasaztwo-p bottom member made up of member 931 glued to return flap 94.Various modifications of this invention will be apparent to thoseskilled inthe. art. and for that reason I wish to limit myself onlywithin the scope of the appended claims.

I claim: I 1. In a single-blankcollapsible carton, the oombination f as:no fr l s hii a li' e ted teseflz l an fsmar ing acontinuousandcollapsible outenwall structur it's ll h i a to? ed e n 'b mas setour top trame panels, each of said top frame panels being integrailyhinged to the top, edge'of one of said outerwa llsl andextending-inwardlythereof, fourinner Walls, each "of 7 said inner wallsbeing integrally. hinged to one of said top frame panels and extendingin parallel spaced relation to: its; respective outer wall: when inerected condition,

four bottom: anchorpanels', each of said bottom anchorpanelsbeing-integrally hinged to one of said inner walls, four bottommembers, each of said bottom members being I integrallyhinged to thebottom edge of one ofsaid' outer is moved'aspa Single unit duringerection ofthe box. Likei wise, the tab 56 joins bottom members44 and 45into a, singl'e L-shaped bottom forming unit. a I

As the tab 56 pivotally moves bottom members 44 and" V 7 45m dhorizontalbottom forming position, the anchor panels 36-and 37- which'are fixedlysecured to bottom members {i iand 45, respectively, are carried in anarcuate 'path from a vertical position to a horizontal position, causingthe'inner walls '2 8 and 29, to be spaced from their respective outerwalls 15 and l6 and drawing top frame panelsltlpand 2i downwardly fromtheir upwardlyextending-position ot Fig. 3 to their horizontal'positionof Fi'gslZ and 4-.'

As thefinner-walls 28 to 31 are pulled downwatjdlyl and moiedhorizontallywith respect to. each other during erection of thecarton, the can]. edges 63 to 71 engage their respective-edge spacerpanels 64 to 67 and force themoutwardly to a position 'at right'anglestotheir re spective inner wallsi28 andSi). The top' sectional view walls29 'and3-1, respectively. The cam edges 69 and Walls, said bottom anchorpanels being fixedly secured to their respeetive bottom members, afirstopposed pair of said bot-tom members having diagonal edges'atdiagonallyopposite positions, and two-bottom folding tabs, 1

each of said bottomfolding tabs-being integrally hinged to one of saiddiagonaledges and fixedly secured to" that one of the remaining opposedpair of said bottom members lyingrespectively adjacent thereto, a firstpair of i opposedinner walls. having edge spacer panels integrallyhinged at their vortical'edges, and the remaining pair of inner-wallshaving cam edges'attheir vertical edges for swinging said edge spacerpanels outwardly toward and maintaining the vertical edges of saidspacer panels in.

of Fig. 5 shows edge spacer panels and 67in final erected positioninface-to-face engagement with the inner 7i l' eirteiidtoward and aid inbracing onter wall 17 Sinii:

lar-l-y, edge-,spacer panels 64 M121 65are in 'lf'ace-to-fiace contact'inner walls 31 and 29, respectively, and they cam edgesofi and 7-1extend toward outer wall 15'.

valious=modiiications of this invention may be made;

7 'to'iadapt the carton for holding various products in different'fashions; in Figs; 8 and 9 is shown in reduced scale-a'modification ofthe blank which enablesithe pro- *v'isionoian.intingrally. hingedcoverfroni asingIebIanlc, 7

' ofimateriali The same numerals as appliedto, the blank ofiEig; l. are,applied in Fig. 8 wherepossible. @An outer walh96tisiintegrallyhingedtoonter wall-1 117 as in Fig. l.

into engagement with-their respective outer walls and-tor rigidifyingabutting. engagement with their p i outer'walls.

2. In a single-blank collapsible carton, the combination of ion;vertical onter'walls hingedly connected-together andforming acontinuous; rectangular and collapsible onter wall structure, said.outerwalls includingthreeouften walls and a cover-hinging outer wall,eachofsaid-three' outerwalls havinga top edge and a bottom dge,-three,-

. horizontal top frame panels, each of said frame panels J'being'integrally. hinged to the top edge of oneof three said outer.walls and. extendinginwardly thereoh 'three;

inner walls, each of said inner walls being integrally hinged tonne ofsaid threetop frame pan els and depend ing. in. parallelism with itsrespective, outer wall, three! j bottom'ancl ioripaneigeachbfjsaidvancho'rpanelsbeing ,integrally hinged to one of said threeinnegwalls, four bottomf'membersieach of said bottom members beingintegrallyhinged tothe bottom edgeot one ofisfaidonter walls, said threebottom anchorjpanels} being. fixedly' secured to. theirrespective/bottom members the.,bottom top edge of said fourth innerwall, and a glue panel integrally hinged to said fourth frame panel andafiixed to the inner upper surface of said cover-hinging outer wall, anda cover integrally hinged to the top edge of said cover-hinging outerwall, a first opposed pair of said bottom members having diagonal edgesextending diagonally inwardly from a first pair of diagonally oppositecorners of the carton, and two actuating tabs, each of said actuatingtabs being integrally hinged to one of said diagonal edges and fixedlysecured to the adjacent one of the remaining opposed pair of said bottommembers whereby upon collapsing the carton into substantially acollapsed parallelogram configuration, the bottom panels are movedupwardly within the carton and the actuating tabs are sandwiched betweentheir respective adjacent bottom panels, a first pair of opposed innerwalls having edge spacer panels integrally hinged at their verticaledges, and the remaining pair of inner walls having cam edges at theirvertical edges for swinging said edge spacer panels outwardly toward andinto engagement with their respective outer walls and for maintainingthe vertical edges of said spacer panels in rigidifying abuttingengagement with their respective outer walls.

3. In a single blank, collapsible carton, the combination of fourvertical outer walls hingedly connected together and forming acontinuous rectangular and collapsible outer wall structure, each ofsaid outer walls having a top edge and a bottom edge, four horizontaltop frame panels, each of said frame panels being integrally hinged tothe top edge of one of said outer walls and extending inwardly thereof,four inner walls, each of said inner walls being integrally hinged toone of said top frame panels and depending in parallelism with itsrespective outer wall, four bottom anchor panels, each of said anchorpanels being integrally hinged to one of said inner walls, four bottommembers, each of said bottom members being integrally hinged to thebottom edge of one of said outer walls, said bottom anchor panels beingfixedly secured to their respective bottom members, a first opposed pairof said bottom members having diagonal edges extending diagonallyinwardly from a first pair of diagonally opposite corners of the carton,and two actuating tabs, each of said actuating tabs being integrallyhinged to one of said diagonal edges and fixedly secured to the adjacentone of the remaining opposed pair of said bottom members whereby uponcollapsing the carton into substantially a collapsed parallelogramconfiguration, the bottom panels are moved upwardly within the cartonand the actuating tabs are sandwiched between their respective adjacentbottom panels, a first pair of opposed inner walls having edge spacerpanels integrally hinged at their vertical edges, and the remaining pairof inner walls having cam edges at their vertical edges for swingingsaid edge spacer panels outwardly toward and into engagement with theirrespective outer walls and for maintaining the vertical edges of saidspacer panels in rigidifying abutting engagement with the inner surfaceof their respective outer walls.

References Cited in the file of this patent UNITED STATES PATENTS797,113 Hiers et al Aug. 15, 1905 1,228,063 Scudder May 29, 19172,349,241 Arneson May 23, 1944 2,581,400 Freel et al. Jan. 8, 19522,628,012 Goldshall Feb. 10, 1953 2,702,154 Linson Feb. 15, 1955 FOREIGNPATENTS 197,998 Great Britain May 23, 1923

